Improvement in lamp-chimneys



G. L. 8r G. BARTHOLOMEW.

Lamp-Chimney.

No. 215,735. Patented May 27, 1879.

UNITED STATES PATENT OFFIGE.

CHARLES L. BARTHOLOMEW AND .GASSIUS BARTHOLOMEW,

OHIO.

on NEWARK,

IMPROVEMENT IN LAMP-CHIMNEYS.

Specification forming part of Letters Patent No. 215,785, dated May 27,1879; application filed February 21, 1879.

To all whom it may concern:

Be it known that we, CHAS. L. BARTHOLO- MEW and GAssIUs BARTHOLOMEW, ofNewark, in the county of Lickingand State of Ohio, have invented certainnew and useful Improvements in Lamp-Chimneys; and we do hereby declarethat the following is a full, clear, and exact description of theinvention, which will enable others skilled in the art to whichitappertains to make and use the same, reference being had to theaccompanying drawings, which form a part of this specification.

Figure 1 is a perspective view. Fig. 2 is a vertical cross-section.

Similar letters of. reference denote. corresponding parts in all thefigures.

This invention relates to lamp-chimneys; and its object is to adapt alamp-chimney for attachment to burners of difierent construction, aswill be hereinafter more fully described, and particularly pointed outin the claim.

In the drawings, A represents the body of the chimney, which may be ofany desired shape. At its lower end it has the neck 13, which iscylindrical in shape, and the length and diameter of which may be variedto any desired extent, so as to fit various sizes of that class ofburners which are provided with upwardly-projecting flat springs orfingers to hold the chimney. At the extreme lower end of the neck B isformed a crease or annular indentation, O, by which the chimney isadapted for attachment to that class of burners in which small clampsand a set-screw are used for securing it in position.

It will be observed that the flange D of the crease or indentation Cdoes not at any point project beyond the periphery of the cylindricalneck. This is in order to avoid all possibility of interfering with theholding springs or fingers when a burner having such is used.

In the patent to Drake, March 19, 1878, a lamp-chimney is shown the neckor lower section of which is provided with an annular corrugation orcrease placed about midway upon said neck. This, however, does notrender the chimney capable of being attached to other burners than thoseprovided with holding springs or fingers, and no such advantage isclaimed for said chimney. We place the crease or corrugation at thelower end of the neck, and thus accomplish the object of our invention.

Our invention can be produced at a cost not exceeding that oflamp-chimneys of the oldfashioned construction, which are capable ofbeing used with but one kind of burner.

Having thus described our invention, we claim and desire to secure byLetters Patent of the United States- As an article of manufacture, alamp-chimney having a cylindrical neck, provided at its extreme lowerend with a crease or annular indentation, the flange of which does notat any point project beyond the periphery of the cylindrical neck, asset forth. I

In testimony that we claim the foregoing as our own we have heretoaffixed our signatures in presence of two witnesses.

CHARLES L. BARTHOLOMEW. OASSIUS BARTHOLOMEW.

Witnesses:

Ovrwsfi. GILBERT, ALFRED J ANDREWS.

